Improved dies for making thimbles and ferrules



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Leners Patent Na. 77,170, avec April 28, 1868.

IMPROVED DIES POR `liIAKING'r THIMBLES AND FBRRULES.

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KNOW ALL MEN BY THESE-PRESENTS:

That I, J.v H. COLE, of Milbury, county of Worcester, und Oommcnweitlthof Massachusetts, have invented u Die and Plunger for Making Fei-rulesor Thimbles of cold wrought iron, which I believe has never before beendone, to be used on drawing-knife or shave-handles, or for such otherpurposes as'they may be applied.

By this improvement I am enabled to make ferrules of cold wrought ironmuch cheaper, more perfect, and much faster than itl can be clone byheating the iron, thereby saving expense of coal and much labor, andalso making less imperfect ones.

This processof making ferrules of cold wrought iron has long beensought, but Without success until now. It is only by this peculiarformation of the die and plunger that the desired result can be reached.The die und plunger must be made so as .to conform to :tud give agradual bearing und stretch to the iron, as it is carried or forced downthe die, or it will crack or-curl before receiving its proper form. 4 v

The peculiar formation of this die and plunger is such that theferruleor thimble is formed by one impres=` sion or stroke-of the press, andasfast as anyone can placethe disk of iron on the die; and I do herebydeclare that the following isa full, clear, and exact description of thesame, reference being had to the accompanying drawings, forming a partof this specification; and to enable those 4skilled in the art to whichmy invention belongs to make and use the same, I will proceed todescribe it. In the dra-iiYing---v l Figure 1 represents a. perspectiveview of a die and plunger-for making fer-rules or thimbles-A the die,nn'dB the plunger. v

`Figure 2 represents a sectional view of the die A and plunger B, thedie A with a groove at the top to receive the disk of iron, from whichgroove commences 'the line of curvatures, increasing in degree'tocorrespond with thestretch ofthe disk of iron, as the plunger B, withits co-acting surfaces, takes it to its final form.

G represents a. perspective View of a. ferrule or'thinlble, as' formedby the co-acting surfaces of the die and ,plunger A and B.

Having described my die, plunger, and ferrule, I claim v J Jointly, the"die and Vplunger A and B, the cci-acting surfaces of which have theconfiguration herein ,f described and show-n, for the manufacture offerrules vnnd'thimbles from disks of cold wrought iron, in the mannerhereinbefore set forth. i

Worcester, September 20, A. D. 1867.

. '.I. n. COLE. Witnesses Guo. B. COLE, I H. F. LELAND.

